The wave number associated with this light, Chemistry

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The frequency of a wave of light is 12x 10 14s-1.   The wave number associated with this light is:

(1) 5x10-7m                       

(2)  4x 10 -8 cm-1              

(3) 2x 10-7 m-1                   

(4)4x10 4cm-1  

Ans: 4x10 4cm-1

 


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